NEC Express5800/120Rf-1, User Manual

Page: 259 / 408

Troubleshooting 8-11
No screen display appears with beep:
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Check whether DIMMs are connected to the mating connectors firmly.
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Check whether DIMMs of different specifications are installed in the specific group.
See Chapter 9 for the specifications of DIMMs.
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DIMMs must be populated in pairs and in the following order:
#5 and #6, #3 and #4, then #1 and #2.
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Installed DIMMs must be the same speed and must all be registered.
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Take a note of beep code pattern, and take appropriate action according to the table
listed earlier in "Beep Codes".
POST fails to complete:
T
Is the DIMM board installed?
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At least two DIMM boards are required for operation.
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Installed DIMMs must be the same speed and must all be registered.
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DIMMs must be populated in pairs and in the following order:
#5 and #6, #3 and #4, then #1 and #2.
T
Is the memory size large?
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The memory check may take a few seconds if the memory size is large. Wait for
a while.
T
Did you perform any keyboard or mouse operation immediately after you started the
server?
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If you perform any keyboard or mouse operation immediately after start-up, POST
may accidentally detect a keyboard controller error and stops proceeding. In
such a case, restart the server once again. Do not perform any keyboard or
mouse operation until the BIOS start-up message appears when you restart the
server.
T
Does the server have contains appropriate memory boards or PCI devices?
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Operation of the server with unauthorized devices is not guaranteed.